Swivel Bail Standard: API Spec 8C
Safety Factor: n=2.25 ~ 3 Working Load Limit: 135 ~ 450 ton
Adopts high-quality structural alloy steel as raw material. Swivel bail is manufactured by free forging. Its strength is verifed throughout 1.5 WLL tensile test.
Special heat treatment
Non-destructive test is performed. There are signs such as WORKING LOAD LIMIT marked on the link. Match with water faucet.